I've tried to replicate the issue with the following setup.

jsreport.config.json

{ "trustUserCode": true, "tempDirectory": "/app/tmp" }

Dockerfile

FROM jsreport/jsreport:3.13.0 RUN npm i client-oauth2@4.3.3 --save --save-exact COPY --chown=jsreport:jsreport jsreport.config.json /app

A template with html recipe and "Hello world" content with attached script

async function beforeRender (req, res) { const jsreport = require("jsreport-proxy") console.log(await jsreport.npm.require("client-oauth2@4.3.3")) }

Then I run a load test with the following code, which results in 0 errors.

const client = require('@jsreport/nodejs-client')('http://localhost:5488') function runOne () { return client.render({ template: { name: 'test' } }) } async function runMany () { for (let i = 0; i < 1000; i++) { await Promise.all([runOne(), runOne(), runOne(), runOne(), runOne()]) console.log(i * 5) } } runMany().then(() => console.log('done')).catch(console.error)

Could you try to replicate the error in a simple way like this?

Note that when the dependency is installed in the image, you don't need to use the jsreport.npm.require. You can call simply the require('client-oauth2')